/**
 * Copyright 2010 Philippe Beaudoin
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.puzzlebazar.client.core.view;

import com.google.gwt.core.client.GWT;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.user.client.ui.Widget;
import com.google.inject.Inject;
import com.gwtplatform.mvp.client.ViewImpl;
import com.puzzlebazar.client.core.presenter.MainPagePresenter;

/**
 * @author Philippe Beaudoin
 */
public class MainPageView extends ViewImpl implements MainPagePresenter.MyView {

  interface Binder extends UiBinder<Widget, MainPageView> { }
  protected static final Binder binder = GWT.create(Binder.class);

  private final Widget widget;

  @UiField
  FlowPanel newsPanel;

  @Inject
  public MainPageView() {
    widget = binder.createAndBindUi(this);
  }

  @Override
  public Widget asWidget() {
    return widget;
  }

  @Override
  public void addToSlot(Object slot, Widget content) {
    assert content != null : "Cannot add null content.";
    if (slot == MainPagePresenter.TYPE_RevealNewsContent) {
      newsPanel.add(content);
    } else {
      super.addToSlot(slot, content);
    }
  }

  @Override
  public void setInSlot(Object slot, Widget content) {
    if (slot == MainPagePresenter.TYPE_RevealNewsContent) {
      newsPanel.clear();
      if (content != null) {
        addToSlot(slot, content);
      }
    } else {
      super.setInSlot(slot, content);
    }
  }

}
